Yealink Network Technology Co., Ltd SIP-T40G 519 VoIP phone — Black

SIP-T40G VoIP phone for office managers

The Yealink SIP-T40G is a business-grade VoIP handset built for managers who handle multiple simultaneous calls. It supports three SIP lines and delivers HD voice quality through the Opus codec. Power over Ethernet simplifies desk cabling by removing the need for a separate power brick in most installations. The handset includes programmable keys for BLF, shared-call appearance and one-touch transfers.

Suits single-desk users with PoE infrastructure

This model fits professionals who need a reliable primary phone with gigabit pass-through for a co-located PC. It is not suited to teams requiring colour displays, touchscreen navigation or built-in Bluetooth pairing for mobile integration. Buyers who need more than three concurrent line registrations or a dedicated headset port beyond the standard RJ9 connector should evaluate other options. The handset cord and stand are fixed accessories included in the box.

Three SIP lines and dual gigabit ports

The defining specification is the three-line capacity combined with dual-port Gigabit Ethernet switching. This determines whether the phone can replace an older two-line unit while still providing a high-speed network drop for a desktop computer. The 519 type designation identifies the hardware revision used for provisioning templates. No other figure in the data sheet governs compatibility with your PBX or network core.